EP3295007A1 - Flüssigkeitsgekühlte brennkraftmaschine - Google Patents
Flüssigkeitsgekühlte brennkraftmaschineInfo
- Publication number
- EP3295007A1 EP3295007A1 EP16736761.4A EP16736761A EP3295007A1 EP 3295007 A1 EP3295007 A1 EP 3295007A1 EP 16736761 A EP16736761 A EP 16736761A EP 3295007 A1 EP3295007 A1 EP 3295007A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cylinder
- cooling jacket
- plane
- internal combustion
- engine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/02—Cylinders; Cylinder heads having cooling means
- F02F1/10—Cylinders; Cylinder heads having cooling means for liquid cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/02—Arrangements for cooling cylinders or cylinder heads
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/02—Cylinders; Cylinder heads having cooling means
- F02F1/10—Cylinders; Cylinder heads having cooling means for liquid cooling
- F02F1/14—Cylinders with means for directing, guiding or distributing liquid stream
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/02—Cylinders; Cylinder heads having cooling means
- F02F1/10—Cylinders; Cylinder heads having cooling means for liquid cooling
- F02F1/16—Cylinder liners of wet type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/02—Arrangements for cooling cylinders or cylinder heads
- F01P2003/021—Cooling cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/02—Cylinders; Cylinder heads having cooling means
- F02F1/10—Cylinders; Cylinder heads having cooling means for liquid cooling
- F02F2001/104—Cylinders; Cylinder heads having cooling means for liquid cooling using an open deck, i.e. the water jacket is open at the block top face
Definitions
- the invention relates to a liquid-cooled internal combustion engine with at least one cylinder block having a plurality of cylinders, wherein the cooling jacket has a crank chamber facing bottom and a cylinder head sealing plane facing ceiling and the bottom - viewed in a side view of the cylinder block - has a wave-like course, said - Measured in each case in the direction of the cylinder axis - a first distance in the region of at least one first engine transverse plane between two adjacent cylinders is greater than a second distance of the bottom of the cooling jacket from the ceiling in the region of at least one cylinder axis containing second engine transverse plane.
- cooling jackets of cylinder blocks are designed with the lowest possible volume, whereby the heating time of the internal combustion engines can be shortened.
- the cooling jackets end - measured from the cylinder head plane - already in the range between half and full piston stroke. This ensures that the area of the cylinder liner is sufficiently cooled, in which the heat input takes place by combustion of the gas mixture.
- the forming higher wall temperatures in thermally uncritical and therefore not cooled areas of the cylinder liner also allow a reduction in the piston friction.
- the smaller cooling jackets also have a positive effect on the weight of the internal combustion engine.
- 5,080,049 A shows such a cylinder block in which the bottom of the cooling jacket has a wave-like profile on one longitudinal side, wherein the distance of the bottom of the cooling jacket from the cylinder head sealing plane in the region of the cylinder head screw axes is the lowest.
- WO 95/21323 A shows a similar solution. It discloses a cooling system of a two-stroke internal combustion engine with a plurality of cylinders, which are surrounded by a cooling jacket. The bottom of the cooling jacket is wave-shaped and is in fluid communication between two cylinders via U-shaped branch passages and vertical duct sections in the region of the engine transverse plane.
- the disadvantage of this is in particular that when longitudinally flowed through cooling jackets, where even in the coolant supply half the mass flow is passed into the cylinder head, sufficient cooling of all cylinders in the cylinder block can not be satisfactorily ensured.
- the structured bottom of the cooling jacket affects the coolant flow and prevents optimum and adequate cooling of the cylinder furthest away from the coolant inflow.
- EP 1 066 459 B2 shows a solution in which the bottom of the cooling jacket of the cylinder block is curved with successive elevations and depressions therebetween, wherein the profile of the bottom in cross section represents in particular a sinusoid or cosine curve.
- the disadvantage here in particular that it still comes to an unfavorable introduction of force through the cylinder head bolts.
- the steadily increasing demands on the roundness of the cylinder liners for friction reduction and the boundary conditions with regard to lightweight construction and increasing power density can only be met inadequately with existing solutions.
- US 5,080,049 A describes a cylinder block for an internal combustion engine with a plurality of cylinders, wherein the cylinders are surrounded by a cooling jacket.
- the cooling jacket has a wave-like course on a longitudinal side of the cylinder block, the distance between the bottom of the cooling jacket and the cylinder head sealing plane being smaller in the region of a first engine transverse plane containing the cylinder head screw axes than in the region of a second engine transverse plane containing the cylinder axis.
- a liquid-cooled internal combustion engine with a similarly shaped cooling jacket is also known from AT 504 983 Bl.
- a cooling jacket for a crankcase is known, the bottom of which - as viewed in a side view - is wave-shaped.
- the cooling jacket has a smaller distance from the cylinder head sealing plane in the region of a first engine transverse plane containing the cylinder axis than in the region of a second engine transverse plane between two cylinders. This is to improve the cooling of thermally highly stressed areas.
- the cooling problem in the cylinder block area is further exacerbated.
- the area between the cylinders is thermally particularly heavily loaded.
- the flow through the cylinder block can be easily controlled so that a sufficient heat dissipation is ensured at the farthest from the coolant supply cylinder.
- the object of the invention is to avoid the following disadvantages of the short cooling jacket, both straight and flat wavy course, namely:
- the bottom of the cooling jacket in the region of the first engine transverse plane has at least one disposed in a first reference plane planar first portion, wherein preferably the first reference plane is formed substantially parallel to a cylinder head plane of the cylinder block.
- the planar first section is designed to extend on both sides of a first engine transverse plane.
- the bottom of the flat portion between the cylinders is designed to extend steeply upwards or starting from a flat portion in the area between the screws of the bottom in the free Zylin- derank Kunststoffsen Kunststoff (cylinder tube between the SSenbutzen) roof-shaped.
- the cooling jacket can be formed open in the cylinder block upwards, with the cylinder head gasket and cylinder head form a ceiling.
- a ceiling facing a cylinder head sealing plane may also be integrated in the cylinder block. This design applies to cylinder blocks with moderate temperatures and temperature deformations, but critical mechanical strength and cylinder tube deformation, such as aluminum open deck constructions with relatively low cooling jacket.
- the invention is based on a structured bottom for a cooling jacket of a cylinder block, which is designed ascending in the direction of the cylinder head sealing surface from the region between the cylinders to the cylinder center.
- the floor thus extends in the area between the cylinders at a greater distance to the cylinder head sealing surface than in the center of the cylinder.
- the invention consists of a structured bottom for the cooling jacket of the cylinder block, which is carried out from the area between the cylinders to the cylinder center strongly ascending in the direction of the cylinder head sealing surface, much steeper than it was constructed in existing cylinder blocks.
- the bottom thus extends in the area between the cylinders at a much greater distance to the cylinder head sealing surface than in the middle of the cylinder.
- the bottom is essentially parallel to the cylinder head sealing surface and thus leveled, that is taking into account production-related inaccuracies.
- planar region of the planar first section extends in the direction of a motor longitudinal axis running parallel to the crankshaft, essentially over a length of at least the diameter of a cylinder head screw to at most the diameter or the width of a cylinder head screw casing of the cylinder head.
- said longitudinal extent of the flat first portion is independent of whether above the flat first portion actually a cylinder head bolt is arranged or not.
- the plane first portion - measured in the direction of a motor axis extending parallel to the crankshaft longitudinal axis - have a length between 0.2 to 0.5 of the bore radius of an adjacent cylinder.
- the first section is thus for example 20-50 percent of the bore radius of an adjacent cylinder.
- the floor between at least a first engine transverse plane and a second engine transverse plane has at least one planar second portion which is arranged in a second reference plane, on the one hand inclined to the first and second engine transverse plane and on the other hand normal to one through the cylinder axes spanned motor longitudinal plane is arranged.
- the plane second section can in a practical embodiment of the invention - measured in the direction of the motor longitudinal axis - for example, have a second length between 0.3 to 0.6 of the bore radius of an adjacent cylinder. The second section is thus for example 30-60 percent of the bore radius of an adjacent cylinder.
- Particularly small deformations of the cylinders can be achieved if the second reference plane with the first reference plane at an angle of about 15 ° to 50 °, preferably about 30 ° to 45 °, includes.
- the invention further provides that at least two second sections are arranged symmetrically with respect to the first engine transverse plane and / or second engine transverse plane.
- the bottom of the cooling jacket of the cylinder block thus rises in the aforementioned angular range in the direction of the cylinder block.
- Kopfdichtf laugh up to about the cylinder center and then drops at the same inclination from the next, flat first section in the adjacent intermediate area between two cylinders.
- the transitions between the flat first sections and the rising planar second sections are rounded by casting and executed with a first transition radius.
- a second transition radius is provided, which is large enough so that there are no stress concentrations.
- the floor may be substantially flat, ie without curvature.
- the cooling jacket can have three different heights, wherein a third distance of the floor from the ceiling in at least one end region of the cooling jacket - preferably in the region of an engine longitudinal plane spanned by the cylinder axes - is less than the first distance.
- a third distance of the floor from the ceiling in at least one end region of the cooling jacket - preferably in the region of an engine longitudinal plane spanned by the cylinder axes - is less than the first distance.
- the flat first section in a direction normal to the longitudinal axis of the cylinder block results in a more favorable, rounded region, which is favorable in terms of production and, moreover, enables good force introduction of the cylinder head bolts.
- the bottom of the cooling jacket describes a load cone and thus allows a load transfer from the screw neck into the cylinder liner without Kraftum- line and thus with the greatest possible uniformity in the largest possible bushing area. This minimizes the negative influence of a low cooling jacket on the mechanical distortion of the cylinder liner.
- the effect of the constriction of the cylinder liners is distributed over the height with the greatest possible uniformity.
- the cooling effect of the cooling jacket is distributed over the largest possible area along the cylinder liner axis. This also minimizes the negative influence of a low cooling jacket on the vertical distortion of the cylinder liner and the thermal constriction of the cylinder liner.
- the constriction of the cylinder liner is significantly reduced by the significantly increased level difference of the soil compared to existing design concepts due to a distribution over a larger barrel height.
- no pronounced coolant flow can form through the structuring.
- the locally poorer heat transfer leads to slightly higher temperatures in the conceptually coolest region of the cylinder liner and thus further reduces the constriction. (Below the cooling jacket, the wall temperature is closer to the higher oil temperature than the lower coolant temperature of the lower cooling jacket.)
- FIG. 1 shows a cooling jacket of a cylinder block according to the invention in a
- FIG. 4 shows a cooling jacket of a cylinder block according to the invention in an end view.
- the figures show a cylinder liner surrounding cooling jacket 1 of a cylinder block not shown in detail an internal combustion engine with four cylinders 2.
- the bottom 3 of the cooling jacket 1 is - as seen in Figure 1 and Fig. 2 - wave-shaped, so that the distance H of the bottom 3 of a ceiling 4 of the cooling jacket 1, viewed in the direction of a longitudinal axis 5 of the cylinder block, increases and decreases.
- the ceiling 4 is located in the region of a cylinder head density plane 4a of the cylinder block.
- the longitudinal axis 5 is formed for example by a not further illustrated crankshaft or a parallel thereto.
- a first distance Hi in the region of a first engine transverse plane 8 extending between two cylinders 2-for example through the axles 6 of the cylinder head bolt holes 7 for the cylinder head bolts- is greater than a second distance H 2 in the region of a second engine transverse plane 10 each including a cylinder axis 9 ,
- a third distance H 3 between the bottom 3 and the ceiling 4 of the cooling jacket 1 is lower than the first between the bottom 3 and the ceiling 4 of the cooling jacket 1, in particular in the region of an engine longitudinal plane 11 spanned by the cylinder axes 9 Distance Hi, greater than the second distance H 2 .
- the third distance H 3 between the ceiling 4 and the bottom 3 in the frontal region 8 of the end face la, lb for example, about 50 to 80 percent of the first distance Hi between the ceiling 3 and the bottom 2 in the region of the first motor transverse plane 8 generates only low mechanical and thermal stresses in these areas.
- the bottom 3 of the cooling jacket 1 in the region of the first motor transverse plane 8 has at least one in a first reference plane ⁇ . arranged planar first portion 12 on both sides of the first motor transverse plane 8 extending, wherein the first reference plane ⁇ . is formed parallel to the cylinder head density plane 4a of the cylinder block.
- the first length Li of the first section 12 is ideally between the diameter d of a Zylinderkopfschrauben- bore 6 and the diameter or the width of a Zylinderkopfschrauben-.
- the planar first section 12 has a first length U which lies between 0.2 to 0.5 (or 20 to 50 percent) of the bore radius R of an adjacent cylinder 2.
- the bottom 3 has at least one planar second section 13, which is arranged in a second reference plane ⁇ 2 , which is inclined on one side to the first motor transverse plane 8 and to the second motor transverse plane 10 and on the other hand through the normal Cylinder axes 9 spanned motor longitudinal plane 11 is arranged.
- the flat second section 13 has - measured in the direction of the motor longitudinal axis 5 - a second length L 2 between 0.3 to 0.6 (or 30 - 60 percent) of the bore radius R of an adjacent cylinder 2.
- the second reference plane ⁇ 2 concludes with the first reference plane ⁇ . an angle ⁇ of about 15 ° to 50 °, preferably about 30 ° to 45 °, a.
- the bottom 3 of the cooling jacket 1 of the cylinder block - as viewed in FIG. 2 - thus rises in the aforementioned angular range ⁇ in the direction of the cylinder head sealing surface 4a to approximately the middle of the cylinder or second engine transverse plane 10 and then falls below the same Inclination from the next, planar first portion 12 in the adjacent region of the first engine transverse plane 8 between two cylinders. 2
- the transitions between the planar first sections 12 and the rising planar second sections 13 are rounded by casting and executed with a first transition radius ri.
- a second transition radius r 2 is provided, which is large enough so that there are no stalls or turbulence in the coolant flow of the cooling jacket 1.
- first transition radii ri and second transition radii r 2 between the first sections 12 and second sections 13 of the bottom 3 is substantially without any curvatures, ie even.
- the bottom 3 of the cooling jacket 1 describes a load cone and thus allows a load transfer from the screw shafts into the cylinder liner without force diversion and thus with the greatest possible uniformity in the widest possible range of the cylinder liner. This minimizes the negative influence of a low cooling jacket on the mechanical distortion of the cylinder liner.
- the effect of the constriction of the cylinder liners is distributed over the height with the greatest possible uniformity.
- the cooling effect of the cooling jacket 1 can be distributed over the largest possible area along the cylinder liner axis. As a result, the negative influence of a low cooling jacket on the vertical distortion of the cylinder liner and the thermal constriction of the cylinder liner is minimized.
- any stiffening rib which extends on the outer wall of the cylinder block in the direction of the cylinder axis which is also referred to as acoustic rib, can be better installed in the cylinder block structure and thus the delay of the cylinder liner can be reduced.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA50390/2015A AT517117B1 (de) | 2015-05-12 | 2015-05-12 | Flüssigkeitsgekühlte brennkraftmaschine |
| PCT/AT2016/050128 WO2016179618A1 (de) | 2015-05-12 | 2016-05-04 | Flüssigkeitsgekühlte brennkraftmaschine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3295007A1 true EP3295007A1 (de) | 2018-03-21 |
| EP3295007B1 EP3295007B1 (de) | 2023-12-27 |
Family
ID=56403911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP16736761.4A Active EP3295007B1 (de) | 2015-05-12 | 2016-05-04 | Flüssigkeitsgekühlte brennkraftmaschine |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US10544751B2 (de) |
| EP (1) | EP3295007B1 (de) |
| CN (1) | CN107949695B (de) |
| AT (1) | AT517117B1 (de) |
| WO (1) | WO2016179618A1 (de) |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2568831B2 (ja) * | 1987-02-04 | 1997-01-08 | 本田技研工業株式会社 | 水冷エンジンのシリンダブロツク |
| US5080049A (en) * | 1991-05-10 | 1992-01-14 | General Motors Corporation | Two stroke engine with tiered cylinder cooling |
| AUPM364894A0 (en) * | 1994-02-01 | 1994-02-24 | Orbital Engine Company (Australia) Proprietary Limited | Improvements relating to two stroke cycl engines |
| US5845786A (en) * | 1996-10-09 | 1998-12-08 | Brown; Doyle Eugene | Inertia-operated clamping devices and a shipping rack using the same |
| DE19812831A1 (de) * | 1998-03-24 | 1999-09-30 | Volkswagen Ag | Brennkraftmaschine mit Fluidkühlsystem |
| JP4192845B2 (ja) * | 2004-05-27 | 2008-12-10 | 三菱自動車工業株式会社 | エンジンの冷却水通路構造 |
| CN2751151Y (zh) * | 2004-12-03 | 2006-01-11 | 长安汽车(集团)有限责任公司 | 一种改进结构的曲轴箱水套 |
| JP4707648B2 (ja) * | 2006-12-14 | 2011-06-22 | ダイハツ工業株式会社 | 多気筒内燃機関用シリンダブロック |
| DE102008013813A1 (de) * | 2008-03-12 | 2009-09-17 | Daimler Ag | Zylinderkurbelgehäuse und Verfahren zu dessen Herstellung |
| AT504983B1 (de) * | 2008-04-30 | 2009-08-15 | Avl List Gmbh | Flüssigkeitsgekühlte brennkraftmaschine |
| JP2010151063A (ja) | 2008-12-25 | 2010-07-08 | Toyota Motor Corp | シリンダブロック |
| CN102072040B (zh) * | 2009-11-19 | 2013-04-17 | 本田技研工业株式会社 | 内燃机 |
| AT512280B1 (de) * | 2012-02-08 | 2013-07-15 | Avl List Gmbh | Flüssigkeitsgekühlte brennkraftmaschine |
| JP5488745B2 (ja) | 2013-04-30 | 2014-05-14 | トヨタ自動車株式会社 | シリンダブロック |
| AT514793B1 (de) * | 2013-09-16 | 2015-06-15 | Avl List Gmbh | Kühlsystem für eine Brennkraftmaschine |
| DE102013016358A1 (de) | 2013-10-01 | 2014-07-24 | Daimler Ag | Hubkolben-Verbrennungskraftmaschine für einen Kraftwagen |
| US20150285125A1 (en) * | 2014-04-02 | 2015-10-08 | GM Global Technology Operations LLC | Cylinder block cooling jacket insert allowing separated cooling circuits |
| KR101826549B1 (ko) * | 2015-12-14 | 2018-02-07 | 현대자동차 주식회사 | 실린더 블록용 워터자켓 |
-
2015
- 2015-05-12 AT ATA50390/2015A patent/AT517117B1/de active
-
2016
- 2016-05-04 CN CN201680039651.9A patent/CN107949695B/zh active Active
- 2016-05-04 WO PCT/AT2016/050128 patent/WO2016179618A1/de not_active Ceased
- 2016-05-04 EP EP16736761.4A patent/EP3295007B1/de active Active
- 2016-05-04 US US15/572,354 patent/US10544751B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| AT517117B1 (de) | 2017-03-15 |
| WO2016179618A1 (de) | 2016-11-17 |
| US10544751B2 (en) | 2020-01-28 |
| CN107949695B (zh) | 2020-09-22 |
| CN107949695A (zh) | 2018-04-20 |
| EP3295007B1 (de) | 2023-12-27 |
| US20180135554A1 (en) | 2018-05-17 |
| AT517117A1 (de) | 2016-11-15 |
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